I have very little experience with the whole cellular iot process. I can connect to Hologram but don’t understand where the data is stored and how to send it to Freeboard io. Have spend many days searching online to no avail.
SparkFun Sara R410m shield on Uno soon to be on Mega 2560.
I should have added that this is volunteer work for a non-profit to log temp, humidity, solar output, battery voltage etc for a mobile refrigeration trailer.